| All Patents in class 408/195 |
Patents 1 -
15
of 70
      |
| Number | Date | Patentee | Title | Type |
| 9,398 | Nov. 16, 1852 | C.L. Barnes | Expanding bit | adjustable drill bits |
| 13,261 | Jul. 17, 1855 | L.H. Gibbs | Expanding auger or bit | adjustable drill bits |
| 17,038 | Apr. 14, 1857 | A. Hall | Expansive bit | adjustable drill bits |
| 20,192 | May 11, 1858 | W.A. Clark | Method of seating the movable cutter in expansive bits | adjustable drill bits |
| 21,597 | Sep. 28, 1858 | W.A. Clark | Expansive bit | adjustable drill bits |
| 22,195 | Nov. 30, 1858 | M. Norris | Auger for wood | adjustable drill bits |
| 22,474 | Dec. 28, 1858 | H. Stone | Expanding bit | drill bits |
| 25,348 | Sep. 06, 1859 | H. Pennie | Bit for Cutting Circular Washers | washer cutters |
| 27,946 | Apr. 17, 1860 | J. Blake | Auger | adjustable drill bits |
| 50,600 | Oct. 24, 1865 | O.A. Smith, C.A. King | Improved Tool for Cutting Washers | |
| 63,882 | Apr. 16, 1867 | A.P. Gruger | Improved Device for Cutting Washers | washer cutters |
| 76,103 | Mar. 31, 1868 | A. Roff | Adjustable Bit for Decorative Work | adjustable drill bits |
| 79,181 | Jun. 23, 1868 | F.T. Andrew | Shoemaker's Tool | cobbler |
| 82,956 | Oct. 13, 1868 | W.A. Ives | Improvement in expansive bits for wood-boring | adjustable drill bits |
| RE3,516 | Jun. 22, 1869 | W.A. Clark | Improvement in expansive bits | adjustable drill bits |
